If 16$ is 8% of my total savings how much money overall do i have in my savings

Ineed the answers for this one as well!

Explain how you can show five less than a number using algebraic expression

Adan has decided to purchase an $9000 car. he plans on putting 20% down toward the purchase and financing the rest at 7.9% interest rate for 3 years. find his monthly payment a) $225.29 b) $298.81 c) $204.78 d) $236.89